Golden Age Cap was a jerk!

Here we see Cap and Bucky, in disguise (Cap is the little old lady), taking a plane to Europe--unlike their appearances in the Invaders comic, GA Cap and Bucky's adventures took place stateside, for the most part. This story was an exception.

Here we see Cap, at the mere suggestion that a fellow passenger "looks like" a Fifth Columnist, socking the suspicious individual in the jaw.



It must have been the monocle.